Re: [PATCH 4/6] perf script: dump software events too

Frederic Weisbecker
2011-03-01T16:28:41Z

2011/3/1 David Ahern <daahern@cisco.com>:
>
>
> On 03/01/2011 08:11 AM, Frederic Weisbecker wrote:
>>
>> Why shouldn't it be designed to dump software events? It's called print_event().
>> Its current version is rather something I would call "limited". But it
>> was not designed
>> to be limited.
>
> That's because its origins are trace specific. Per last week's thread,
> perf-script was perf-trace until Nov 2010. perf-script deals with
> tracepoints.

Right it has been first created to support tracing events. Now why
should it stay limited to them?

>> Ideally, we should have print_tracepoint_event() in
>> trace-event-parse.c, print_software_event()
>> where you want, and have print_event() in builtin-script.c that wraps on those.
>
>
> process_event does not take the event sample, it takes elements of it:
>
> struct scripting_ops {
> ...
>    void (*process_event) (int cpu, void *data, int size,
>                   unsigned long long nsecs, char *comm);
> ...
> };

What is the problem with changing a function prototype?